package com.yan.config;

import javax.servlet.MultipartConfigElement;

import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.web.HttpMessageConverters;
import org.springframework.boot.web.filter.OrderedCharacterEncodingFilter;
import org.springframework.boot.web.servlet.MultipartConfigFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.filter.CharacterEncodingFilter;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;

import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;

@Configuration
public class WebMvcConfig extends WebMvcConfigurerAdapter {

	@Bean
	public HttpMessageConverters fastJsonHttpMessageConverters() {
		FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();
		FastJsonConfig fastJsonConfig = new FastJsonConfig();
		fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat, SerializerFeature.NotWriteDefaultValue,
				SerializerFeature.WriteNullStringAsEmpty);
		fastJsonConfig.setDateFormat("yyyy-MM-dd HH:mm:ss"); // 自定义时间格式

		fastConverter.setFastJsonConfig(fastJsonConfig);
		return new HttpMessageConverters(fastConverter);
	}

	@Bean
	public InternalResourceViewResolver internalResourceViewResolver() {
		InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
		// viewResolver.setPrefix("/WEB-INF/views/");
		viewResolver.setPrefix("/");
		viewResolver.setSuffix(".jsp");
		return viewResolver;
	}

	@Override
	public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
		configurer.enable();
	}

	@Override
	public void addCorsMappings(CorsRegistry registry) {
		registry.addMapping("/**").allowedOrigins("*").allowCredentials(true)
				.allowedMethods("GET", "POST", "DELETE", "PUT").maxAge(3600);
	}

	@Bean
	@ConditionalOnMissingBean(CharacterEncodingFilter.class)
	public CharacterEncodingFilter characterEncodingFilter() {
		CharacterEncodingFilter filter = new OrderedCharacterEncodingFilter();
		filter.setEncoding("UTF-8");
		filter.setForceRequestEncoding(true);
		filter.setForceResponseEncoding(true);
		return filter;
	}

	/**
	 * 文件上传配置
	 * 
	 * @return
	 */
	@Bean
	public MultipartConfigElement multipartConfigElement() {
		MultipartConfigFactory factory = new MultipartConfigFactory();
		// 文件最大
		factory.setMaxFileSize("10240KB"); // KB,MB
		/// 设置总上传数据总大小
		factory.setMaxRequestSize("102400KB");
		return factory.createMultipartConfig();
	}

}
